Switch S of the circuit shows in Fig. is...

Switch `S` of the circuit shows in Fig. is closed at `t = 0`. If `e` denotes the induced emf in `L` and `i` the current flowing through the circuit at time `t`, then which of the following graphs correctly represents the variation of `e` with `i`?

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The correct Answer is:

`e = E - iR`
Clearly, the graph is a straight line with negative slope.

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